mirror of
https://github.com/thestk/stk
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91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
/******************************************/
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/* Enhanced (Jaffe-Smith, Smith, others) */
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/* Karplus-Strong plucked model */
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/* by Perry Cook, 1995-96 */
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/* This is the super-class, with no */
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/* excitation specified. So this one by */
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/* itself doesn't make any sound. */
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/******************************************/
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#include "Plucked2.h"
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Plucked2 :: Plucked2(MY_FLOAT lowestFreq)
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{
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length = (long) (SRATE / lowestFreq + 1);
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baseLoopGain = 0.995;
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loopGain = 0.999;
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delayLine = new DLineA(length);
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delayLine2 = new DLineA(length);
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combDelay = new DLineL(length);
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filter = new OneZero;
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filter2 = new OneZero;
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pluckAmp = 0.3;
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pluckPos = 0.4;
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detuning = 0.995;
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lastFreq = lowestFreq * 2.0;
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lastLength = length * 0.5;
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}
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Plucked2 :: ~Plucked2()
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{
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delete delayLine;
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delete delayLine2;
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delete combDelay;
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delete filter;
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delete filter2;
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}
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void Plucked2 :: clear()
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{
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delayLine->clear();
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delayLine2->clear();
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combDelay->clear();
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filter->clear();
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filter2->clear();
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}
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void Plucked2 :: setFreq(MY_FLOAT frequency)
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{
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lastFreq = frequency;
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lastLength = ((MY_FLOAT) SRATE / lastFreq); /* length - delays */
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delayLine->setDelay((lastLength / detuning) - 0.5);
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delayLine2->setDelay((lastLength * detuning) - 0.5);
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loopGain = baseLoopGain + (frequency * 0.000005);
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if (loopGain>1.0) loopGain = 0.99999;
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}
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void Plucked2 :: setDetune(MY_FLOAT detune)
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{
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detuning = detune;
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delayLine->setDelay((lastLength / detuning) - 0.5);
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delayLine2->setDelay((lastLength * detuning) - 0.5);
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}
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void Plucked2 :: setFreqAndDetune(MY_FLOAT frequency,MY_FLOAT detune)
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{
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lastFreq = frequency;
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detuning = detune;
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this->setFreq(frequency);
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}
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void Plucked2 :: setPluckPos(MY_FLOAT position)
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{
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pluckPos = position;
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}
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void Plucked2 :: setBaseLoopGain(MY_FLOAT aGain)
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{
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baseLoopGain = aGain;
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loopGain = baseLoopGain + (lastFreq * 0.000005);
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if (loopGain>1.0) loopGain = 0.99999;
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}
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void Plucked2 :: noteOff(MY_FLOAT amp)
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{
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loopGain = (1.0 - amp) * 0.5;
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#if defined(_debug_)
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printf("Plucked2 : NoteOff: Amp=%lf\n",amp);
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#endif
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}
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